CN112455489B

CN112455489B - Axle box for trolley bus

Info

Publication number: CN112455489B
Application number: CN201910857723.6A
Authority: CN
Inventors: 张硕; 张蕊姣; 李良杰; 孙秀宇; 刘坤
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2022-06-14
Anticipated expiration: 2039-09-09
Also published as: CN112455489A

Abstract

The embodiment of the application provides an axle box applied to a trolley bus, wherein the axle box is used for connecting a traction motor and a vehicle body connecting frame; the trolley body connecting frame is arranged between two carriages of the trolley bus; the traction motor is connected with the wheels and is used for driving the wheels to rotate; the axle housing includes: an axle box main body; the axle box main body is provided with a motor mounting hole for connecting with a traction motor; the number of the motor mounting holes is multiple, and the motor mounting holes are annularly arranged and are positioned in the middle of the axle box main body; and a frame connecting seat used for being connected with a vehicle body connecting frame is arranged on the axle box main body. The axle box that is applied to trolley bus that this application embodiment provided has comparatively simple structure.

Description

Axle box for trolley bus

Technical Field

The application relates to a trolley bus running technology, in particular to an axle box applied to a trolley bus.

Background

With the annual increase of the automobile keeping quantity of each big city, the phenomenon of traffic jam is more and more serious, so that the people can take public transport means to travel to become a preferred travel mode advocated by people. A public transportation vehicle includes: the system comprises a subway, a light rail, a bus, a trolley bus and the like, wherein the trolley bus is already put into application in many cities due to the advantages of environmental protection, no emission, large passenger capacity, easy infrastructure construction, low construction cost and the like.

The trolley bus mainly includes: the running system is used for realizing running and steering functions. The conventional running system is complex in structure and high in height, so that the height of the floor of the carriage is raised, the gravity center of the carriage is high, and the stability is poor. In addition, the trolley bus comprises at least two carriages, and the trolley bus has more curves and smaller turning radius in the running process of urban roads, so that the traction and buffer structures among the carriages determine the performance of the trolley bus in the turning process, and the conventional trolley bus has the problems of poor stability, large vibration and the like in the turning process.

Disclosure of Invention

In order to solve one of the technical defects, the embodiment of the application provides an axle box applied to a trolley bus.

The embodiment of the application provides an axle box applied to a trolley bus, which is used for connecting a traction motor with a vehicle body connecting frame; the trolley body connecting frame is arranged between two carriages of the trolley bus; the traction motor is connected with the wheels and is used for driving the wheels to rotate;

the axle housing includes: an axle box main body;

the axle box main body is provided with a motor mounting hole for connecting with a traction motor; the number of the motor mounting holes is multiple, and the motor mounting holes are annularly arranged and are positioned in the middle of the axle box main body;

and a frame connecting seat used for being connected with a vehicle body connecting frame is arranged on the axle box main body.

The axle box provided by the embodiment of the application comprises an axle box main body, wherein a plurality of motor mounting holes which are positioned in the middle of the axle box main body and are annularly arranged are formed in the axle box main body and are used for being connected with a traction motor, and the traction motor is used for driving wheels to rotate; the axle box main body is also provided with a frame connecting seat which is used for connecting with a vehicle body connecting frame. Compared with the traditional walking system, the axle box structure provided by the embodiment is simple, the installation interface which is connected with the vehicle body connecting frame and the motor is arranged on the axle box structure, all the parts can be integrally connected onto the axle box, and the assembly process is simple.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a trolley bus according to a first embodiment of the present application;

FIG. 2 is a perspective view of a power running system coupled to a vehicle body attachment frame according to one embodiment of the present application;

FIG. 3 is a side view of a power running system coupled to a body attachment frame according to one embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of an axle housing according to an embodiment of the present disclosure;

FIG. 5 is an exploded view of an axle housing coupled to a traction motor and a brake disc according to an embodiment of the present disclosure;

FIG. 6 is an exploded view of a brake device of the power running system according to the second embodiment of the present application;

FIG. 7 is a schematic structural view of a traction motor coupled to a brake disc in the power running system according to the second embodiment of the present application;

FIG. 8 is an exploded view of a traction motor coupled to a wheel of a power traveling system according to a second embodiment of the present application;

FIG. 9 is a schematic view of a traction motor coupled to a wheel of a power traveling system according to a second embodiment of the present application;

FIG. 10 is a schematic view of the upper yoke of the power running system according to the third embodiment of the present application;

FIG. 11 is a schematic structural view of the upper yoke body in the upper yoke shown in FIG. 10;

FIG. 12 is a schematic structural view of a rubber node in the upper yoke shown in FIG. 10;

FIG. 13 is a schematic structural view of a lower yoke of a power running system according to a third embodiment of the present application;

FIG. 14 is an exploded view of the axle housing of FIG. 4 assembled with the upper and lower yoke;

FIG. 15 is a schematic illustration of the axle housing of FIG. 4 assembled with an air spring and vertical shock absorber.

Reference numerals:

11-a carriage; 12-a vehicle body attachment frame; 13-a power running system;

2-axle boxes; 21-air spring mounting; 211-air spring mounting holes; 22-a vertical shock absorber mounting section; 221-vertical shock absorber mounting holes; 23-upper yoke mount; 231-upper yoke mounting holes; 24-a lower yoke mount; 241-lower yoke mounting holes; 25-a brake mount; 251-brake mounting holes; 26-motor punching; 27-motor mounting holes; 28-motor wire perforation; 29-anti-roll device mounting holes; 210-a riser; 211-coaming; 212-rib plate;

3-a traction motor; 31-a motor body; 32-a motor housing; 33-a motor connection shaft; 34-a shaft connecting piece; 35-a connection terminal;

4-a wheel;

51-upper yoke; 51 a-upper yoke body; 511-upper yoke main lever; 512-upper yoke struts; 513-an upper yoke connection; 514-upper yoke connection hole; 52-lower yoke; 521-lower yoke main lever; 522-lower yoke link; 53-rubber node; 531-buffer; 532-a connecting part; 533-connecting hole;

61-air spring; 62-vertical shock absorber;

7-a braking device; 71-a brake mount; 72-brake caliper; 73-a brake disc; 74-brake reservoir;

81-anti-roll torsion bar; 82-anti-roll link arm.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

The embodiment of the application provides an axle box, can be applied to in the trolley bus.

Fig. 1 is a schematic structural diagram of a trolley bus according to a first embodiment of the present application. Taking the trolley bus shown in fig. 1 as an example, the trolley bus comprises at least two carriages 11, and two adjacent carriages 11 are connected through a vehicle body connecting frame 12. The trolley bus also includes: the power running system 13 is connected with the vehicle body connecting frame 12 and is used for supporting the vehicle body connecting frame 12 on one hand and applying traction force to the vehicle body connecting frame 12 on the other hand.

In the present embodiment, the vehicle traveling direction is referred to as a longitudinal direction, a direction perpendicular to the traveling direction is referred to as a lateral direction, and a vertical direction is referred to as a vertical direction.

The power running system 13 may comprise: axle boxes, wheels and traction motors, wherein the axle boxes are used as main parts of the power running system 13 for connecting with the vehicle body connecting frame 12, and have interfaces for connecting with the traction motors. The traction motor is respectively connected with the axle box and the wheel and is used for driving the wheel to rotate.

FIG. 2 is a perspective view of a power running system coupled to a vehicle body attachment frame according to an embodiment of the present invention. Taking the structure shown in fig. 2 as an example, in this embodiment, the power running system 13 includes two sets of power running assemblies symmetrically disposed on both lateral sides of the vehicle body connecting frame 12.

The two groups of power running assemblies have the same structure, and the specific structure of one group is taken as an example for detailed description.

FIG. 3 is a side view of a power running system coupled to a body attachment frame according to one embodiment of the present application. As shown in fig. 2 and 3, the power running assembly comprises: axle boxes 2, traction motors 3 and wheels 4. In which the axle boxes 2 are connected to the vehicle body connection frame 12 and also to the traction motor 3. When the traction motor 3 rotates in the forward direction, the traction motor 3 transmits torque to the wheels 4, and the friction force between the wheels 4 and the ground causes the wheels 4 to move forward while rotating, and transmits traction to the vehicle body connecting frame 12 through the traction motor 3 and the axle box 2 in sequence.

Fig. 4 is a schematic structural diagram of an axle box according to a first embodiment of the present disclosure, and fig. 5 is an exploded view of the axle box connected to a traction motor and a brake disc according to the first embodiment of the present disclosure. As shown in fig. 4 and 5, the axle box 2 includes an axle box body having a plate-like structure extending in a vertical direction, and a connection rib plate and the like protruding from the axle box body and perpendicular to a plane of the axle box body for improving strength of the axle box body.

The axle box body is provided with a motor mounting hole 27 for connecting with a traction motor. The number of the motor mounting holes 27 is plural, and the plural motor mounting holes 27 are arranged in a ring shape and are located in the middle of the axle box main body. The connection terminals 35 provided at the inner end of the traction motor are fixedly connected to the axle box body by bolts after passing through the corresponding motor mounting holes 27.

The connection mode between the traction motor and the wheel can adopt a mode commonly used in the field, and the embodiment is not explained and limited.

The axle box body is also provided with a frame connecting base for connecting with a vehicle body connecting frame 12. The axle box main body and the vehicle body connecting frame 12 can be directly connected or connected through a connecting piece, and the specific implementation mode can be various. The specific scheme of the frame connection seat may be set according to the specific connection structure of the axle box body and the vehicle body connection frame 12, and this embodiment is not limited.

The axle box provided by the embodiment comprises an axle box main body, wherein a plurality of annularly arranged motor mounting holes are formed in the axle box main body and are used for being connected with a traction motor, and the traction motor is used for driving wheels to rotate; the axle box main body is also provided with a frame connecting seat which is used for being connected with a vehicle body connecting frame. Compared with the traditional walking system, the axle box structure provided by the embodiment is simple, the installation interface which is connected with the vehicle body connecting frame and the motor is arranged on the axle box structure, all the parts can be integrally connected onto the axle box, and the assembly process is simple.

Example two

The embodiment is based on the embodiment, and optimizes the structure of the axle box and the power running assembly applied to the axle box.

The configuration of the axle box 2 can be set according to the traction motor 3. In this embodiment, the traction motor 3 has a structure in which a stator is internally provided and a rotor is externally provided. The wheel 4 is sleeved on the outer side of the traction motor 3, is connected with the rotor and synchronously rotates with the rotor. In addition, as shown in fig. 2, the power running assembly further includes: and a braking device 7 for suppressing the rotation of the wheel 4 in a braking state.

The present embodiment provides an implementation of the braking device 7:

FIG. 6 is an exploded view of a braking device in a power running system according to a second embodiment of the present application. As shown in fig. 5 and 6, the present embodiment provides a braking device 7 including: a brake disc 73 and a brake caliper 72. Wherein the brake disc 73 is connected to the rotor in the traction motor 3 and rotates in synchronism with the rotor. The brake caliper 72 is provided on the axle housing 2 for clamping the brake disc 73 for braking in a braking state.

To describe the connection mode between the traction motor 3 and the brake disk 73, first, a specific configuration of the traction motor 3 will be described.

Fig. 7 is a schematic structural diagram of a traction motor and a brake disc in the power running system according to the second embodiment of the present application. As shown in fig. 7, the traction motor 3 includes: the motor comprises a motor body 31, a stator, a rotor and a motor shell 32, wherein the stator is arranged on the motor body 31, and the rotor is arranged on the outer ring of the stator in a surrounding manner and can rotate relative to the motor body 31. The motor housing 32 is fitted around the outside of the rotor, and is connected to the rotor to rotate together with the rotor with respect to the motor main body 31. The motor main body 31 is fixedly connected to the axle housing 2. Only the motor main body 31 and the motor housing 32 can be seen in fig. 7.

Fig. 8 is an exploded view of a traction motor connected to a wheel in a power running system according to a second embodiment of the present application, and fig. 9 is a schematic structural view of the traction motor connected to the wheel in the power running system according to the second embodiment of the present application. As shown in fig. 5, 8 and 9, the wheel 4 is sleeved outside the motor housing 32, and a hub in the wheel 4 is connected to the motor housing 32, where the hub can be understood as an inner ring structure of a tire in the wheel 4, and is a rigid structure.

The traction motor 3 is located outside the axle box 2, wherein a motor connecting shaft 33 extending in the lateral direction is connected to one end of the motor housing 32 facing the axle box 2. As shown in fig. 5, the motor connecting shaft 33 passes through the motor through-hole 26 formed in the axle housing 2 and is connected to a brake disc 73 located inside the axle housing 2. Specifically, the connecting shaft piece 34 is positioned on the inner side of the brake disc 73, a part of the connecting shaft piece 34 can penetrate through the central hole of the brake disc 73 to be connected with the motor connecting shaft 33, and the connecting shaft piece 34 is further connected with the brake disc 73 through bolts, so that the motor connecting shaft 33, the connecting shaft piece 34 and the brake disc 73 are connected together and rotate synchronously.

On the basis of the technical scheme, the embodiment provides an installation mode of the brake clamp:

the brake mounting member 71 shown in fig. 5 is connected to the axle housing 2 and forms a space for accommodating the brake disc 73 with the axle housing 2. The brake caliper 72 is mounted on the brake mounting member 71, and the brake caliper 71 extends to both sides of the brake disc 73 to clamp the brake disc 73 in a braking state. Specifically, the brake mounting member 71 is a long plate-shaped member perpendicular to the lateral direction, and both ends thereof are connected to the brake mounting seats 25 protruding from both sides of the axle housing 2, respectively. The brake disc 73 is located in a space surrounded by the axle housing 2, the brake mounting 25, and the brake mounting member 71.

In this embodiment, a brake reservoir 74 is used to provide the driving force for the brake caliper 72, and the brake reservoir 74 is fixed to the brake mounting member 71 and is located inside the axle housing 2.

The brake caliper 72 and the brake reservoir 74 may be of any construction commonly used in the art, and the connection manner may be directly or adaptively modified based on the above-mentioned manner.

In addition to the above, the braking device 7 can also adopt other ways, such as: and (3) changing a braking source: braking in a hydraulic braking mode; changing the installation mode of the braking device: adjusting the structure of the brake mounting member and the connection mode with the axle box.

Accordingly, the present embodiment provides a specific implementation manner of the axle box 2 for the structures of the traction motor 3 and the braking device 7: as shown in fig. 4, 5, and 6, the axle housing 2 is provided at a middle portion thereof with a motor through hole 26 through which a motor connecting shaft 33 passes. The periphery of the motor through hole 26 is provided with a circle of a plurality of motor mounting holes 27 for the connection terminals 35 arranged at the end of the traction motor 3 to pass through and be fixedly connected by bolts. A motor wire penetration hole 28 is provided above the motor mounting hole 27 located above, and a motor terminal passes through and is connected to a cable.

The center of the motor through hole 26 is also the center of the traction motor 3 and the brake disc 73, and a surrounding plate is arranged at the periphery of the motor through hole 26 to form a space for accommodating the brake disc 73. Specifically, the axle housing 2 includes: the vertical plate 210 that extends along the vertical direction and the bounding wall 211 that protrudes in the riser 210 medial surface, bounding wall 211 is semicircle ring-shaped, is perpendicular with riser 210. The riser 210 and the apron 211 enclose a space for accommodating the brake disc 73. A plurality of rib plates 212 are connected between the risers 210 and the apron 211, and the strength of the axle box 2 can be improved.

The inner side surface of the vertical plate 210 is provided with two brake installation seats 25 connected with the brake installation piece 71, and the two brake installation seats 25 are distributed on two sides of the vertical plate 210. The riser 210, shroud 211 and brake mounting 25 may be integrally formed. The brake installation seats 25 extend in a direction perpendicular to the risers 210, and ends thereof are provided with brake installation holes 251 for coupling with the brake installation members 71 by means of bolts.

The traction motor with the built-in stator and the built-out rotor is arranged in the wheel, so that the original wheel hub of the wheel is replaced, the space in the wheel is fully utilized, the space utilization rate of the power traveling system is improved, the whole volume of the power traveling system is reduced, and the occupied space is reduced. And two power traveling assemblies are symmetrically arranged at the two transverse sides of the vehicle body connecting frame instead of the lower part of the carriage, so that the height of the carriage floor can be reduced, the center of the carriage is lowered, and the stability is improved.

The above-described structure adopted for the axle box main body provides connection interfaces for the respective components so that the components are integrated on the axle box main body. The axle box main body adopts a structure of the vertical plate and the coaming, and the brake disc is enclosed in the axle box main body, so that on one hand, the brake disc can be protected, and the influence of sundries attached to the brake disc on the braking effect is avoided; on the other hand, the strength of the axle box body can be improved.

EXAMPLE III

In the embodiment, the axle box and the power walking component applied to the axle box are optimized on the basis of the technical scheme.

As shown in fig. 2 and 3, the axle boxes 2 are connected to the vehicle body connecting frame 12 through a yoke assembly. The yoke assembly serves to connect the axle housing 2 to the vehicle body connecting frame 12 on the one hand, and to enable transmission of traction and braking forces between the two on the other hand, and also to damp forces acting between the two.

In order not to obscure the power running system, only half of the body attachment frame 12 is shown in fig. 2. In practice, the vehicle body attachment frame 12 is of a symmetrical construction.

In this embodiment, the yoke assembly includes: an upper yoke 51 and a lower yoke 52. The upper yoke 51 is connected between the top of the axle box 2 and the vehicle body connecting frame 12, and the lower yoke 52 is connected between the bottom of the axle box 2 and the vehicle body connecting frame 12.

For the upper yoke 51, the present embodiment provides a specific implementation manner:

fig. 10 is a schematic structural view of an upper yoke in a power running system according to a third embodiment of the present application, fig. 11 is a schematic structural view of an upper yoke body in the upper yoke shown in fig. 10, and fig. 12 is a schematic structural view of a rubber node in the upper yoke shown in fig. 10.

As shown in fig. 10 to 12, the upper yoke 51 includes: an upper yoke body 51a and a rubber node 53. The upper yoke main body 51a has upper yoke connecting portions 513 at both ends thereof. A rubber node 53 is provided on the upper yoke connecting portion 513, and the rubber node 53 is used for connection with the vehicle body connecting frame 12 or the axle box 2.

Specifically, the upper yoke body 51a includes: an upper main yoke 511 and an upper yoke strut 512, wherein the upper main yoke 511 extends in the longitudinal direction. The number of the upper yoke struts 512 is two, and the two upper yoke struts are respectively connected to two ends of the upper yoke main rod 511. The upper yoke struts 512 extend in the transverse direction, and the middle part thereof is connected with the upper yoke main rod 511, which is equivalent to that the two upper yoke struts 512 are connected with the upper yoke main rod 511 to form an approximate I-shaped structure.

Further, the upper arm main lever 511 is provided in a bent rod shape, and the middle portion thereof is arched in the direction of the vehicle body connecting frame 12, so that the strength thereof can be improved.

An upper yoke connecting portion 513 is provided at each of both ends of each upper yoke strut 512, the upper yoke connecting portion 513 is provided with an upper yoke connecting hole 514 whose center line extends in the longitudinal direction, the rubber node 53 is provided in the upper yoke connecting hole 514, and both ends of the rubber node 53 extend out of the upper yoke connecting hole 514 for connection with the vehicle body connecting frame 12 or the axle box 2. As the structure shown in fig. 12, the rubber node 53 includes: a buffer portion 531 and connection portions 532 located at both ends of the buffer portion 531. The connecting portion 532 is made of metal, a buffer portion 531 is formed between the middle portion of the connecting portion 532 and rubber through a vulcanization process, and the buffer portion 531 is arranged in the upper yoke connecting hole 514. The connecting portion 532 extends out of the upper yoke connecting hole 514 and is provided with a connecting hole 533 for connecting with the axle box 2 or the vehicle body connecting frame 12 by a bolt.

The upper yoke stay 512 extends in the lateral direction, and has one end connected to the axle box 2 via a rubber joint 53 and the other end connected to the vehicle body connecting frame 12 via a rubber joint 53.

For the lower yoke 52, this embodiment provides a specific connection:

FIG. 13 is a schematic structural view of a lower yoke of a power running system according to a third embodiment of the present application. As shown in fig. 2 and 13, the lower yoke 52 is two in number, and is disposed side by side and symmetrically connected between the axle box 2 and the vehicle body connecting frame 12. The lower yoke 52 specifically includes: a lower yoke stem 521 and a rubber node 53. The lower arm main rod 521 extends along a transverse direction, and two ends of the lower arm main rod are respectively provided with a lower arm connecting portion 522. The rubber node 53 is provided on the lower yoke connecting portion 522 for connection with the axle box 2 or the vehicle body connecting frame 12.

Specifically, the lower arm main lever 521 has a curved shape, for example, an "S" shape with a small curvature, and the strength thereof can be improved. The lower yoke connecting portions 522 are respectively disposed at two ends of the lower yoke main rod 521, a lower yoke connecting hole is disposed on the lower yoke connecting portion 522, a center line of the lower yoke connecting hole extends in the longitudinal direction, the rubber node 53 may be disposed in the lower yoke connecting hole, and two ends of the rubber node 53 extend out of the lower yoke connecting hole to be connected to the axle box 2 or the vehicle body connecting frame 12.

The rubber node 53 may be implemented by referring to the structure shown in fig. 12, and the connection to the lower yoke connecting portion 522 may be implemented by referring to the connection to the upper yoke connecting portion 513.

The upper yoke 51 and the lower yoke 52 function as a connecting member for connecting the axle box 2 and the vehicle body connecting frame 12 above and below the axle box 2, respectively, and are capable of transmitting a traction force and a braking force between the axle box 2 and the vehicle body connecting frame 12. Furthermore, the rubber node 53 provided in the upper yoke 51 and the lower yoke 52 can also buffer the force acting between the axle box 2 and the vehicle body connecting frame 12, thereby avoiding the structural damage and deformation caused by the excessive rigid force between the two.

The independent upper and

lower forks

51 and 52 are used for connecting the axle box 2 and the vehicle body connecting frame 12, so that the flexibility of the carriage in the turning process can be improved, and the carriage can adapt to a route with a smaller turning radius.

With respect to the manner of coupling the yoke assembly to the body attachment frame 12 as described above, the present embodiment provides a specific implementation of an axle housing.

Figure 14 is an exploded view of the axle housing of figure 4 assembled with the upper and lower yoke. As shown in fig. 4 and 14, the top of the axle housing 2 is provided with an upper yoke mounting 23 for connection to an upper yoke 51. The number of the upper yoke mounting seats 23 is two, and the upper yoke mounting seats are symmetrically arranged on two sides of the axle box 2. The upper yoke mounting base 23 is an upwardly open "U" shaped structure that receives the upper yoke connecting portion 513 of the upper yoke 51 therebetween. The two ends of the upper yoke mounting base 23 of the "U" shaped structure are provided with upper yoke mounting holes 231, which are connected with rubber nodes 53 arranged on the upper yoke connecting part 513 through bolts.

The bottom of the axle housing 2 is provided with a lower yoke mounting 24 for connection to a lower yoke 52. The lower yoke mounting seats 24 are two in number and are symmetrically arranged on both sides of the axle box 2. The lower yoke mounting block 24 is a downwardly opening "U" shaped structure that receives the lower yoke coupling 522 in the lower yoke 52. The two ends of the lower yoke mounting seat 24 of the U-shaped structure are provided with lower yoke mounting holes 241, and are connected with the rubber node 53 arranged on the lower yoke connecting part 522 through bolts.

The implementation of the upper yoke 51 and the lower yoke 52 is not limited to the above-mentioned embodiment, and other implementations may be adopted. For example: the upper yoke 51 may also be used in the same manner as the lower yoke 52, namely: two separate upper yokes having the same structure as the lower yoke 52 are provided and are connected between the axle boxes 2 and the vehicle body connecting frame 12, respectively. The structure of the axle box 2 can be adaptively adjusted according to the specific structures of the upper and lower yokes.

Example four

In the embodiment, the axle box and the applied power running component are further optimized on the basis of the embodiment.

As shown in fig. 2 and 3, the power running assembly further comprises: and a suspension device connected between the axle box 2 and the vehicle body connecting frame 12. The suspension serves on the one hand to provide a connection and positioning between the axle housing 2 and the body connecting frame 12 and on the other hand to dampen forces between the two.

The suspension device may specifically include: and an air spring 61 provided at the top end of the axle case 2. Specifically, the bottom end of the air spring 61 is connected to the top end of the axle box 2, and the top end of the air spring 61 is connected to the vehicle body attachment frame 12. The air spring 61 may be of a structure commonly used in the art, and the structure of the axle box 2 may be adaptively adjusted according to the air spring 61 of different structures, and is not limited to the structure provided in the present embodiment. The buffer energy of the air spring 61 is adjusted according to the load of the carriage, so that the air spring adapts to the load of the vehicle body, the vehicle body is reasonably buffered, and the vibration amplitude of the carriage is reduced.

Further, the suspension device may further include: and a vertical damper 62 connected between the top end of the axle box 2 and the vehicle body connecting frame 12. Specifically, the bottom end of the vertical damper 62 is connected to the axle box 2 by a bolt, and the top end thereof is connected to the vehicle body connecting frame 12 by a bolt. The vertical damper 62 extends in the vertical direction, and is used for buffering the vertical force between the vehicle body connecting frame 12 and the axle box 2, so as to reduce the vibration amplitude of the carriage.

The vertical damper 62 may be of a construction commonly used in the art, and the construction of the axle box 2 may be adapted according to the specific construction of the selected vertical damper 62, and is not limited to the embodiment provided.

For the suspension device, the embodiment provides a specific implementation manner of the axle box 2:

FIG. 15 is a schematic illustration of the axle housing of FIG. 4 assembled with an air spring and vertical shock absorber. As shown in fig. 2, 3, 4 and 15, the top of the axle box 2 is provided with an air spring mounting portion 21 for connecting with an air spring 61, the top of the air spring mounting portion 21 is a horizontal mounting surface, and is provided with an air spring mounting hole 211 with a central line extending along the vertical direction for connecting with the bottom of the air spring 61 through a bolt.

The top of the axle box 2 is further provided with a vertical shock absorber mounting portion 22 for connecting with the vertical shock absorber 62, and the vertical shock absorber mounting portion 22 is provided with a vertical shock absorber mounting hole 221 extending along the longitudinal direction along the center line and connected with the bottom end of the vertical shock absorber 62 through a bolt.

Other implementations of the air spring 61 and the vertical damper 62 are possible, and the axle box 2 can be adaptively adjusted according to the specific structures of the air spring 61 and the vertical damper 62.

EXAMPLE five

In the present embodiment, the axle boxes and the applied power running gear are further optimized on the basis of the above embodiments.

As shown in fig. 2, the power running assembly further includes an anti-rolling device extending in the transverse direction and respectively connected to the car body connecting frame 12 and the axle boxes 2 at both sides of the car body connecting frame 12, so as to prevent the car from rolling over due to a large height difference between the power running assemblies at both sides.

The embodiment provides an implementation manner of an anti-roll device: the anti-roll device includes: anti-roll torsion bar 81 and anti-roll link arm 82. The anti-roll torsion bar 81 extends in the lateral direction, and both ends thereof extend to the vicinity of the axle boxes 2 on both sides. The number of the anti-roll connecting arms 82 is two, and the anti-roll connecting arms are symmetrically connected to two ends of the anti-roll torsion bar 81.

Specifically, the anti-roll torsion bar 81 has a straight rod-like middle portion, and two ends bent and extended toward the axle box 2. The anti-roll link arm 82 extends in the vertical direction, and has a bottom end bolted to the end of the anti-roll torsion bar 81 and a top end bolted to the axle box 2.

The anti-roll connecting arm 82 may be a straight rod or a steel spring structure having a certain amount of expansion in the vertical direction to buffer the vertical force between the axle box 2 and the anti-roll torsion bar 81.

For the anti-roll device, the embodiment provides a specific implementation manner of the axle box 2:

as shown in fig. 2 and 4, the axle housing 2 is provided at an upper portion thereof with an anti-roll device mounting hole 29 having a center line extending in the lateral direction and located below the upper yoke mounting seat 23. Bolts are used to connect to the top ends of the anti-roll connecting arms 82 through the anti-roll device mounting holes 29.

The implementation manner of the anti-roll device is only an example, and other manners besides the above manners may be adopted, and the embodiment will not be described in detail.

The axle box 2 provided in each of the above embodiments is of an integrally molded structure, and the shape and layout of each part are not limited to the above embodiment, and other embodiments may be adopted.

The body structure of the vehicle body attachment frame 12 is arranged in the lateral direction, and the area enclosed by the body structure forms a longitudinal passage. In the transverse direction, the vehicle body connecting frame 12 is in a shape that the upper part is wide and the lower part is narrow, and the two groups of power traveling assemblies are respectively arranged on the two transverse sides of the lower part of the vehicle body connecting frame 12, so that the axle box 2, the braking device 7, the upper fork arm 51 and the lower fork arm 52 are all positioned below the upper part of the vehicle body connecting frame 21, the installation space is saved, and the situation that the width of the axle box exceeds the width of a carriage is avoided.

The structure of the axle box main body is adaptively adjusted according to the structure of the vehicle body connection frame 12, and is not limited to the structure provided in the present embodiment.

The axle box according to any of the above embodiments can be used as a single product for activities such as production and sale, and is applied to a power running system that can be directly applied to vehicle body connection frames of various structures, or can be adapted to the structure of the vehicle body connection frame.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An axle box applied to a trolley bus is characterized in that the axle box is used for connecting a traction motor with a vehicle body connecting frame; the trolley body connecting frame is arranged between two carriages of the trolley bus; the traction motor is connected with the wheels and is used for driving the wheels to rotate;

the axle housing includes: an axle box main body;

the axle box main body is provided with a frame connecting seat used for being connected with a vehicle body connecting frame;

the traction motor includes:

the motor main body is connected with the axle box through the motor mounting hole;

a stator disposed on the motor main body;

the rotor is arranged around the outer ring of the stator and can rotate relative to the motor main body;

the motor shell is sleeved on the outer side of the rotor and synchronously rotates with the rotor; the wheel sleeve is arranged on the outer side of the motor shell and rotates synchronously with the motor shell;

the motor connecting shaft is positioned at one end of the motor main body and is connected with the motor shell;

the axle box main body is also provided with motor through holes for the motor connecting shaft to pass through, and the motor through holes are positioned in the area surrounded by the motor mounting holes;

the motor connecting shaft penetrates through the other end of the axle box and is connected with the brake disc;

the axle box main body includes: the vertical plate extends vertically, and the semicircular surrounding plate protrudes out of the inner side surface of the vertical plate and is perpendicular to the vertical plate; the vertical plate and the coaming enclose a space for accommodating the brake disc;

the axle housing further comprises:

the brake mounting seat is arranged on the inner side surface of the vertical plate and extends in the direction vertical to the vertical plate; the brake mounting base is used for being connected with a brake mounting piece, and a brake clamp is arranged on the brake mounting piece and used for clamping a brake disc to brake in a braking state.

2. The axle housing of claim 1, wherein the brake mounts are two in number, one on each side of the riser; and the brake mounting seat is provided with a brake mounting hole for connecting with a brake mounting piece through a bolt.

3. The axle housing of claim 1, wherein the frame attachment base comprises:

the upper fork arm mounting seat is arranged at the top of the axle box main body and is used for being connected with the upper fork arm; the upper fork arm is also connected with the vehicle body connecting frame;

the lower fork arm mounting seat is arranged at the bottom of the axle box main body and is used for being connected with the lower fork arm; the lower fork arm is also connected with the vehicle body connecting frame.

4. The axle housing of claim 3, wherein the upper yoke mounting base is an upwardly opening "U" shaped structure having upper yoke mounting holes at both ends; the end part of the upper fork arm can extend into the U-shaped structure, and the upper fork arm mounting hole is used for being connected with the upper fork arm through a bolt; the number of the upper fork arm installation seats is two, and the upper fork arm installation seats are symmetrically arranged on two sides of the axle box main body.

5. The axle housing of claim 3, wherein the lower yoke mounting is a downwardly opening "U" shaped structure having lower yoke mounting holes at opposite ends thereof; the end part of the lower fork arm can extend into the U-shaped structure, and the lower fork arm mounting hole is used for being connected with the lower fork arm through a bolt; the number of the lower fork arm installation seats is two, and the lower fork arm installation seats are symmetrically arranged on two sides of the axle box main body.

6. The axle box of claim 1, wherein a top portion of the axle box body is provided with an air spring mounting portion for connection to an air spring; the air spring installation part is provided with a horizontal installation surface, the bottom of the air spring is fixed on the horizontal installation surface, and the top end of the air spring is connected with the vehicle body connecting frame.

7. The axle box according to claim 1, wherein a vertical damper mounting portion is provided at a top portion of the axle box main body; the vertical shock absorber mounting part is provided with a vertical shock absorber mounting hole with a central line extending along the longitudinal direction and used for being connected with the bottom end of the vertical shock absorber, and the top end of the vertical shock absorber is connected with the vehicle body connecting frame.